Function Declaration vs Expression: The Rich Kid vs The Intern

📰 Dev.to · Kunal

Learn the difference between function declarations and function expressions in JavaScript and how to use them effectively

intermediate Published 12 Mar 2026
Action Steps
  1. Declare a function using the function declaration syntax
  2. Define a function using the function expression syntax
  3. Compare the differences in hoisting between function declarations and expressions
  4. Use arrow functions as an alternative to traditional function expressions
  5. Test the differences in binding and scope between function declarations and expressions
Who Needs to Know This

JavaScript developers and frontend engineers can benefit from understanding the differences between function declarations and expressions to write more efficient and readable code

Key Insight

💡 Function declarations are hoisted to the top of the scope, while function expressions are not

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💡 Function Declaration vs Expression: know the difference to write better JavaScript code

Full Article

While writing blog on Arrow Functions , I keep seeing two terms everywhere Function Declaration and...
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